The O/S is slowly crawling to landscape support albeit it's only certain places right now or activated by certain actions. If your in landscape app for instance and open the task switcher by the back button everything is in landscape with a pixel out of place. The lack of landscape support for the start screen is what really marred the HTC TP7 back in the days.
I also do hope we do get landscape start screen support at some point.
Flow entry of text on a tablet device is such a no brainer i am staggered that it hasn't been implemented, even more so when I actually try and swipe and find i can't.